Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Env sci ch 7
Study Guide
| Question | Answer |
|---|---|
| Estuaries are very productive ecosystems because they receive fresh nutrients from? | rivers and oceans |
| What causes most coastal pollution in the US | Industrial waste and sewage |
| What adaptation prevents phytoplaankton from sinking into deep waters? | flagella |
| Swamps are commonly found on what type of land | flat, poorly drained land |
| The majority of marine organisms are found where? | shallow, coastal waters |
| What happens to rivers as they flow down a mountain? | become wider, warmer and slower |
| Two threats to ocean ecosystems | waste and overfishing |
| types of organisms found in a pond depend on what three things. | amount of sunlight, temperature and nutrients oresent |
| What zone of the ocean is life diverse and abundant? | littoral |
| What zone of the ocean is the water cool and dark? | benthic |
| How does a nekton swim | freely |
| How is a benthos different from a nekton | attached |
| which organism produces most of the food in an aquatic ecosystem | phtyoplankton |
| the arrangement of organisms in the open ocean is determined by what two things | nutrients and sunlight |
| an estuary functions as a mineral trap due to | mixing of river and ocean water |
| coral reefs are formed as a result of the secretion of | calcium carbonate by coral polyps |
| what are the two main types of freshwater wetlands | marshes and swamps |
| which ecosystem has the highest level of salinity | salt marsh |
| what are three threats to coral reefs | oil spills, sewage, pesticides |
| photosynthesis does not occur in deep ocean water because | no sunlight |
| Plankton form what part of the marine food web | base |
| the least productive marine ecosystem is the | open ocean |
| excessive nutrient growth in an aquatic ecosystem can be accelerated by | runoff |
| barnacles are a type of this and are bottom dwelling organisms | benthos |
| fish are a type of this and are free swimming organisms | nekton |
| mosses use these to anchor themselves to rocks near churing rivers | rhizoids |
| long thin islands that typically run parallel to a shore | barrier |
| the amount of dissolved salts in water is known as | salinity |
| a river changes with these two things | land and climate |
| what percent of all coral reefs are threatened by human activities | twenty seven |
Created by:
bcalvert